Injector device



Dec. 15, 1953 s. H. LAMPORT INJECTOR DEVICE 2 sheets-sheet 1 Filed Aug. 4, 1949 T. W R

A S] mm ATTORNEY S. H. LAMPORT INJECTOR DEVICE Dec. 15, 1953 2 SheetsSheet 2 Filed. Aug. 4, 1949 FIGQ4;

INVENTOR SAMUEL H. LAMPORT,

A TORNEY Patented Dec. 15, 1953 INJECTOR DEVICE Samuel H. Lamport, Southbridgc, Mass., assignor to Golding Bros. Company, Inc., New York,

N. Y., a corporation Application August 4, 1949, Serial No. 108,500

1 Claim. 1

This invention relates to an injector apparatus for injecting plastic fluids into molds and between materials to fasten same together.

In particular, this invention has reference to an apparatus to pump or inject any liquid or fiowable material.

An object of this invention is to provide an apparatus of the type described which is especially adapted for injecting or pumping any mechanically unstable colloidal suspension, such as latex, due to the non-rubbing and non-agitating of the device.

A further object is to provide an apparatus of the character described which may be removably attached to a cementing device, particularly to a seam-sealing machine for fusion welding the abutting edges; of a cemented floor covering. Such a machine is the subject matter of a copending application bearing Serial No. 98,902, filed on June 14, 1949 now Patent No. 2,556,476, dated June 12, 1951.

A still further object of this invention is the provision of an organization in which the constituent elements are so arranged structurally and functionally as to assure improved results with materials and members which may be manufactured at reasonable cost, may be easily assembled and which will be efficient in operation with minimum wear to the parts.

The best embodiment of the invention has been chosen for illustrative purposes, but this embodiment should be viewed as being illustrative only and not as limiting because obviously the invention is capable of other embodiments having revised details of construction, so long as they fall within the ambit of the appended claim.

The invention itself, however, both as to its organization and its method of operation, will best be understood from the following description of a specific embodiment when read in connection with the accompanying drawings, in which:

Fig. 1 is a front elevational view of the injector, with parts broken away.

Fig. 2 is a side elevational view of same and with parts broken away.

Fig. 3 is an enlarged detail view of the injector unit of the device and shows parts broken away.

Fig. 4 is a vertical transverse section of the in jector unit and is taken along a plane indicated by line and arrows 4-4 of Figure 3.

Fig. 5 is a sectional detail, partly drawn apart, of a coupler which forms a part of the device.

Fig. 6 is an elevational view of a squeezing element which forms a part of the injector unit.

Fig. 7 is a section of same taken along the line 1-1 of Figure 6.

Fig. 8 is a plan view which shows, by means of the dot and dash lines, the approximate shape of the seam-sealing device of the copending application, hereinbefore referred to and shows, in full lines, a specially formed nozzle which is employed when the injector is attached to the seamsealing machine, and

Fig. 9 is an elevational side view of Figure 8 and shows in elevation, the special nozzle.

Referring in detail to the parts I i designates a carrier having a base, l2, side or bracket members I3, and a plate-like rear member I i. Extending forwardly and secured to the upper end of the rear plate member [4 is a U-shaped bracket member 15 having forwardly extending side or check pieces I6 which hold in position a cylindrical reservoir H. A thimble l8 extends through and is secured to the bottom of the reservoir ll, and extends a slight distance upward. within same. A perforated, cylindrically shaped filter 19, preferably of very fine wire mesh, is removably nested within the reservoir [8 and is provided with a perforated concave bottom 20 which is secured within same at a level slightly above the bottom edge of the filter IS. The upper and lower edges of the filter are rimmed by reinforcing bands 2| and 22, respectively.

Secured to the rear plate M, by means of a bracket 23 and screws 25, is a motor 26 having a downwardly extending drive shaft 27 with a worm gear 28 secured upon the end thereof. Regulation conductors 29 connect the motor 26 with a conductor 36, which leads from an electrical source to supply current to the motor. Switches 3| and 32 are disposed in the conductor circuits to control the electrical flow to the motor and the direction of rotation thereof.

The worm gear 28 coacts with a complementary gear 33 upon a shaft 34 (Figure l) which is mounted in a block 35, the said block 36 being secured upon the base [2 by means of screws 43. Ball-bearing, anti-friction units 3?; and 31 are mounted at the ends of a bore 38 formed in the block and supports the shaft 3-! which extends beyond the face of the block to engage a ballbearing anti-friction unit 39 held in a supporting plate 40. (Figures 1, 2 and a.) The plate as is secured to the block 35 by means of screws d! and is properly aligned thereon, by means of pins 42 which engage perforations in the plate All. The said block 35 is formed with an annular recess or pocket 44 having a circumferential wall. The lower half of the circumferential wall of the said recess or pocket having a smaller diameter or circumference than the upper half of the said wall. A web and ring element 41, hereinafter termed the squeezer element is rotatable in said recess or pocket, is mounted upon the shaft 34 and is secured, by means of screws 46, to a shoulder 45 (Fig. 4) integrally formed upon the shaft.

This squeezer element 41 is of annular shape and comprises, in formation, a central, longitudinal web 48, a pair of rings 49 overlapping the ends of the web 48 and forming, with the long sides of the central web 48, slots 50 and 50, which are in parallel formation upon opposite sides of the central web 48. In each of the slots 50 and 55', diametrically opposite each other, are pressure rollers and 5! respectively, and between the ends of the slots 55 and 5|, along the outer, shorter edges of the central web 48, there are formed grooves 52 and 52', semi-circular in cross section and best shown in Figures 3, 6 and 7.

To the nipple !8, extending through the bottom of the reservoir II, there is connected at one of its ends a flexible feed tube 53 which is attached at its other end, over the enlarged end 54 of an angular nipple 55 engaging singly in an orifice upon the male member 5! of a coupler unit. Upon the male member 5'! is a threaded shank 58 which engages the internal threaded portion of the complementary or female member 5% of the coupler unit. The lower portion 8! of the member 55 engages and is snugly seated in a pocket 52 formed upon the block 35.

The lower end of the male member is leveled to give it a conical shape, as at 6-3, which conical end coincides with a similar or complementary conical formation 54 upon the upper inner portion of the female member 65. The end of a flexible discharge tube 66, which is preferably of vinyl, engages through the said female member 85 of the coupler unit and is slitted to form a fiare 55, (Fig. 5) which conforms to the conical formation 63 upon the said male member 51 of the coupler unit. The said flared end is held tightly between the conical portions of the male and female members 57! and 60 of the coupler unit when same are brought together. The said flexible discharge tube $8, starting at its connection with the said coupler unit passes through an orifice 67 in the block 35, down through the recess 44, between the groove 52 upon the said squeezer element and the side wall of the lower, smaller portion of the recess 44, passing between the rollers 5| and the side wall of the recess 44, then between the opposite groove 52', and the side wall, up into the larger portion of the recess 44, out through the orifice 58 and continuing to any predetermined length. At the end of the flexible tubing 65, there is attached any suitable nozzle 59 from which the liquid being passed through the flexible discharge tube 65 is discharged. (Figures 1 and 3.)

In Figures 1, 3 and 4 the squeezer element 44 is shown with one pair of pressure rollers 5! in their uppermost or free position while the lowermost pair of pressure rollers 5| are in the lower or active position to compress or deform the flexible discharge tube 56.

In operation, a liquid or any flowable material contained in the reservoir l'i flows through the feed tube 53, and through the coupler unit 5i-fit into the discharge tube 66 down to the beginning point of deformity of the discharge tube 56. The motor 26 is actuated and rotates the squeezer element 44, in the direction indicated by the arrow A. (Figure 3.) As the pressure rollers 5| come into contact with the discharge tube 66, they squeeze the walls of the tube together, as indicated at in Figure 4 and continue the squeeze until the pressure rollers 51 have completed their passage around the peripheral wall of the lower smaller section of the recess 44. At this point the pressure rollers 5| have passed into the upper larger section of the recess 44 and have reached a point where they contact the tube 66 and begin their squeeze action against the tube. In consecutive and repetitious order the pressure rollers 5| and 5| will continue their squeeze action so long as the motor is activated to rotate the squeezer element 44, thereby drawing the flowable liquid from the reservoir l1, through the feed tubes 53 into and through the discharge tube 65 and out through the nozzle 69, to the point of application. The arrows shown at the tube ends 53 and 55 in Figures 3 and 4 indicate the flow of liquid when the squeezer element 44 rotates in the direction indicated by the arrow A shown in Figure 3. By reversing the rotation of the motor 26 and the squeezer element 44 any suitable cleaning fluid may be forced through the tubes 66 and 53 in a reverse direction.

While the apparatus so far described may be used as a single unit for injecting a flowable liquid through any form of nozzle there is shown in Figures 8 and 9 the particular shape of a nozzle 13 which is designed for use with the seam-sealing machine set forth in the copending application the serial number and filing date of which has hereinbefore been given. For the application of this device to the seam-sealing machine re ferred to, suitable attachment orifices 14 (Figures 1 and 2) are provided which fit over headed pegs, (not shown), suitably placed upon the seamsealing machine. The nozzle 13 is held upon the seam-sealing machine by clamping same upon the standard thereof as by clamps I5 and 15 and connection with the injector device is made by attaching the tube 66 with the nozzle 3 at the point 11. The seam-sealing machine is shown in approximate outline by the dot-dash lines in Figures 8 and 9.

A handle or lifting bar Il may be provided and is attached to the rear plate 14 by bolts 12.

I claim:

An injector apparatus attachable to a fusing and seam-sealing machine, comprising a carrier attachable to said fusing and seam-sealing machine, a reservoir containing a latex solution, a block having an annular pocket having an upper portion and a lower portion, the upper portion having a greater diameter than the lower portion, and mounted upon the said attachable carrier, a squeezer element having a shaft rotatably mounted in said annular pocket, the said squeezer element comprising a web-like member having diametrically opposed rollers thereon, slots diametrically located on opposite sides of the solid web, from the outer periphery inward of the squeezer element, a sufficient distance to form a channel slot in which to house the rollers, the said rollers upon the squeezer element being mounted in pairs along the periphery of the squeezer element (with the axis of each pair being parallel to the axis of the squeezer element) and with the rollers of each pair being disposed in its respective slot, a flexible and deformable tube connected to the said reservoir and passing through the said block and en gaging against the lower wall of said annular pocket and disposed between the lower circumference of the squeezer element and the lower Wall of said annular pocket and a driver upon the said carrier connecting with the shaft to motivate the said squeezer element.

SAMUEL H. LAMPORT.

Name Date Lee June 14, 1890 Number Number 6 Name Date Fraser et a1 May 2, 1893 Barks June 21, 1927 Deutsch et a1. July 5, 1927 Albertine June 12, 1934 Santiago et a1 Jan. 15, 1935 Jacobs Jan. 20, 1948 Moulinier Oct. 4, 1949 Wood Nov. 22, 1949 Lamport June 12, 1951 

